Calculation and application for activity interaction parameters of Sn-Ce-Me lead-free solder slloys

The activity interaction parameters between Ce and Sn or Me in Sn-Ce-Me ternary alloy systems(Me=Pb,Bi,Zn,Sb,Ag,Cu,Cd) are calculated and analyzed by means of Chou model.The calculating results show that Ce have high affinity with element Sn not only in Sn-Pb-Ce ternary alloy system,but also in Sn-Bi-Ce,Sn-Sb-Ce,Sn-Zn-Ce,Sn-Cd-Ce,Sn-Ag-Ce,Sn-Cu-Ce ternary alloy system.The results will provide foundations for theoretical analysis for developing new lead-free solder alloys.